Displaying 1 result from an estimated 1 matches for "mysampsize".
2008 Mar 09
1
sampsize in Random Forests
...en 1-100. This information is stored
in the vector studySites.
I want to run randomForests using stratified sampling, so I chose the option
strata = factor(studySites)
But I am not sure how to control the number of samples taken from each
study site. I tried to use 10 points from each study site:
mySampSize = rep(10, 100)
So my function call looks like:
RF = randomForest(myClass~., data=myData, mtry=5, importance=TRUE,
strata = factor(studySites), sampsize=mySampSize)
But randomForest gives me the following error:
Error in randomForest.default(m, y, ...) :
sampsize can not be larger than class frequ...